#!/bin/sh 
#      parted 
#  117  fdisk -l
    mkfs -t ext4 /dev/sda4 
    pvcreate /dev/sda4
    vgextend centos /dev/sda4 
    lvdisplay 
    lvextend -L +4G /dev/centos/root 
    xfs_growfs /dev/centos/root 